drivers/net/tulip/timer.c

   1 /*
   2         drivers/net/tulip/timer.c
   3
   4         Copyright 2000,2001  The Linux Kernel Team
   5         Written/copyright 1994-2001 by Donald Becker.
   6
   7         This software may be used and distributed according to the terms
   8         of the GNU General Public License, incorporated herein by reference.
   9
  10         Please refer to Documentation/DocBook/tulip-user.{pdf,ps,html}
  11         for more information on this driver.
  12
  13         Please submit bugs to http://bugzilla.kernel.org/ .
  14 */
  15
  16
  17 #include "tulip.h"
  18
  19
  20 void tulip_media_task(struct work_struct *work)
  21 {
  22         struct tulip_private *tp =
  23                 container_of(work, struct tulip_private, media_work);
  24         struct net_device *dev = tp->dev;
  25         void __iomem *ioaddr = tp->base_addr;
  26         u32 csr12 = ioread32(ioaddr + CSR12);
  27         int next_tick = 2*HZ;
  28         unsigned long flags;
  29
  30         if (tulip_debug > 2) {
  31                 netdev_dbg(dev, "Media selection tick, %s, status %08x mode %08x SIA %08x %08x %08x %08x\n",
  32                            medianame[dev->if_port],
  33                            ioread32(ioaddr + CSR5), ioread32(ioaddr + CSR6),
  34                            csr12, ioread32(ioaddr + CSR13),
  35                            ioread32(ioaddr + CSR14), ioread32(ioaddr + CSR15));
  36         }
  37         switch (tp->chip_id) {
  38         case DC21140:
  39         case DC21142:
  40         case MX98713:
  41         case COMPEX9881:
  42         case DM910X:
  43         default: {
  44                 struct medialeaf *mleaf;
  45                 unsigned char *p;
  46                 if (tp->mtable == NULL) {       /* No EEPROM info, use generic code. */
  47                         /* Not much that can be done.
  48                            Assume this a generic MII or SYM transceiver. */
  49                         next_tick = 60*HZ;
  50                         if (tulip_debug > 2)
  51                                 netdev_dbg(dev, "network media monitor CSR6 %08x CSR12 0x%02x\n",
  52                                            ioread32(ioaddr + CSR6),
  53                                            csr12 & 0xff);
  54                         break;
  55                 }
  56                 mleaf = &tp->mtable->mleaf[tp->cur_index];
  57                 p = mleaf->leafdata;
  58                 switch (mleaf->type) {
  59                 case 0: case 4: {
  60                         /* Type 0 serial or 4 SYM transceiver.  Check the link beat bit. */
  61                         int offset = mleaf->type == 4 ? 5 : 2;
  62                         s8 bitnum = p[offset];
  63                         if (p[offset+1] & 0x80) {
  64                                 if (tulip_debug > 1)
  65                                         netdev_dbg(dev, "Transceiver monitor tick CSR12=%#02x, no media sense\n",
  66                                                    csr12);
  67                                 if (mleaf->type == 4) {
  68                                         if (mleaf->media == 3 && (csr12 & 0x02))
  69                                                 goto select_next_media;
  70                                 }
  71                                 break;
  72                         }
  73                         if (tulip_debug > 2)
  74                                 netdev_dbg(dev, "Transceiver monitor tick: CSR12=%#02x bit %d is %d, expecting %d\n",
  75                                            csr12, (bitnum >> 1) & 7,
  76                                            (csr12 & (1 << ((bitnum >> 1) & 7))) != 0,
  77                                            (bitnum >= 0));
  78                         /* Check that the specified bit has the proper value. */
  79                         if ((bitnum < 0) !=
  80                                 ((csr12 & (1 << ((bitnum >> 1) & 7))) != 0)) {
  81                                 if (tulip_debug > 2)
  82                                         netdev_dbg(dev, "Link beat detected for %s\n",
  83                                                    medianame[mleaf->media & MEDIA_MASK]);
  84                                 if ((p[2] & 0x61) == 0x01)      /* Bogus Znyx board. */
  85                                         goto actually_mii;
  86                                 netif_carrier_on(dev);
  87                                 break;
  88                         }
  89                         netif_carrier_off(dev);
  90                         if (tp->medialock)
  91                                 break;
  92           select_next_media:
  93                         if (--tp->cur_index < 0) {
  94                                 /* We start again, but should instead look for default. */
  95                                 tp->cur_index = tp->mtable->leafcount - 1;
  96                         }
  97                         dev->if_port = tp->mtable->mleaf[tp->cur_index].media;
  98                         if (tulip_media_cap[dev->if_port] & MediaIsFD)
  99                                 goto select_next_media; /* Skip FD entries. */
 100                         if (tulip_debug > 1)
 101                                 netdev_dbg(dev, "No link beat on media %s, trying transceiver type %s\n",
 102                                            medianame[mleaf->media & MEDIA_MASK],
 103                                            medianame[tp->mtable->mleaf[tp->cur_index].media]);
 104                         tulip_select_media(dev, 0);
 105                         /* Restart the transmit process. */
 106                         tulip_restart_rxtx(tp);
 107                         next_tick = (24*HZ)/10;
 108                         break;
 109                 }
 110                 case 1:  case 3:                /* 21140, 21142 MII */
 111                 actually_mii:
 112                         if (tulip_check_duplex(dev) < 0) {
 113                                 netif_carrier_off(dev);
 114                                 next_tick = 3*HZ;
 115                         } else {
 116                                 netif_carrier_on(dev);
 117                                 next_tick = 60*HZ;
 118                         }
 119                         break;
 120                 case 2:                                 /* 21142 serial block has no link beat. */
 121                 default:
 122                         break;
 123                 }
 124         }
 125         break;
 126         }
 127
 128
 129         spin_lock_irqsave(&tp->lock, flags);
 130         if (tp->timeout_recovery) {
 131                 tulip_tx_timeout_complete(tp, ioaddr);
 132                 tp->timeout_recovery = 0;
 133         }
 134         spin_unlock_irqrestore(&tp->lock, flags);
 135
 136         /* mod_timer synchronizes us with potential add_timer calls
 137          * from interrupts.
 138          */
 139         mod_timer(&tp->timer, RUN_AT(next_tick));
 140 }
 141
 142
 143 void mxic_timer(unsigned long data)
 144 {
 145         struct net_device *dev = (struct net_device *)data;
 146         struct tulip_private *tp = netdev_priv(dev);
 147         void __iomem *ioaddr = tp->base_addr;
 148         int next_tick = 60*HZ;
 149
 150         if (tulip_debug > 3) {
 151                 dev_info(&dev->dev, "MXIC negotiation status %08x\n",
 152                          ioread32(ioaddr + CSR12));
 153         }
 154         if (next_tick) {
 155                 mod_timer(&tp->timer, RUN_AT(next_tick));
 156         }
 157 }
 158
 159
 160 void comet_timer(unsigned long data)
 161 {
 162         struct net_device *dev = (struct net_device *)data;
 163         struct tulip_private *tp = netdev_priv(dev);
 164         int next_tick = 60*HZ;
 165
 166         if (tulip_debug > 1)
 167                 netdev_dbg(dev, "Comet link status %04x partner capability %04x\n",
 168                            tulip_mdio_read(dev, tp->phys[0], 1),
 169                            tulip_mdio_read(dev, tp->phys[0], 5));
 170         /* mod_timer synchronizes us with potential add_timer calls
 171          * from interrupts.
 172          */
 173         if (tulip_check_duplex(dev) < 0)
 174                 { netif_carrier_off(dev); }
 175         else
 176                 { netif_carrier_on(dev); }
 177         mod_timer(&tp->timer, RUN_AT(next_tick));
 178 }
 179